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Integrated assessment of ecological status and ecological well-being of water bodies based on monitoring presupposes attributions of the aquatic ecosystems to definite gradations of trophic state and level of pollution. In really these attributions are carried out by means of multi-criteria evaluation. The evaluation uses a number of parameters. Each of them must be indispensable, and the parameters taken together must be sufficient for the precise evaluation. Of course, each of the parameters must be suitable for...

Monitoring of aquatic objects ecological state must include forehanded recognition of critical situations. Therefore, the forecasting widely uses possibilities of computer simulation. Of course, the most complicated and relevant simulation model of an aquatic ecosystem is giant simplification of its real life. Nevertheless, history of mathematical ecology proves that even such simple simulations of population dynamics, as predator-prey models and ones of competition for a resource between two or three species can ...

There is old-established avowed demand of determination of ecologically proved limits of anthropogenic impact at natural ecosystems. Preservation of fresh waterbodies and streams ecosystems is very essential problem, because the fresh water more and more becomes one of the most important strategic resources. Of course, sea ecosystems are also needed in protection owing to their role in the biological resources maintenance. A monitoring system includes complex of different hardware and software, which must ensure f...

The paper is devoted to a research of ice cover parameters intra- and inter-annual variability along a section of the Northern Sea Throughway due to the global warming. The standard sailing route is situated between the Sabetta seaport (the Yamal Peninsula, Russia) and North Cape (Norway). The natural gas liquefaction plant in the Sabetta City is one of the largest ones in the world, and the liquefied gas producing is increasing. Now there is an imperative need to provide hydrocarbons marine transportation from oi...